1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc520504e3bcbaa24ddf2d1cc2405a8b732a8c29c672634dddb14436f3d732677. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b18f640-dbf4-409b-afc7-8928a80619d8.json and https://artists.proofprofile.net/proofs/artist/6b18f640-dbf4-409b-afc7-8928a80619d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec60f3acfd8ffe9110fa0ea4dfc38c4ce7743b37d205ee899a8b4758b8ff95c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA6E82000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c92c170e56969bfb179ecb584943fbb37a0f7ccfea429c7889b29bb1f076fb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801945237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adc6a3f7b626e0a2d1b74640e0cd1ffd918493baa0b3aa2f460d218d41b427f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801945239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded2662a7c3864c075d21ae81f4f6a0dfdd8e96e19ba2877c3ed6f6986c5048c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2207259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23fcda20cfcd459d0e2b3e7cf30ac37c3911600ef92c448536701c2e23a64be. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2249179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abdd83d576eb9c72cbbd3eebff00dbca547c9bf7ada7fc7ac5998c4fca5fda0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2255901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281d46705f14536a3c5cce4623681ad81ffa01c660949593fef46b85bc0d144. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2255916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9fde2232bcc3e4a5477d466536b633239006adb4b05ad369856949202f0d40. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2255921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded2662a7c3864c075d21ae81f4f6a0dfdd8e96e19ba2877c3ed6f6986c5048c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2207259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23fcda20cfcd459d0e2b3e7cf30ac37c3911600ef92c448536701c2e23a64be. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2249179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898f97728b40bddfb629965e5c217d05f5d40c66b8558c9631725ef87e8e0469. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2255929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec8ef1feafcf0508cf6c59c34b85516bdea47f2db08b2183693604f10327118. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2255952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79de6417589b4467c75d45aee1c486583af75ca3b57f08cd606b71ccdc212e61. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2255959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e231060bd48900c2126d5da068b837d873eae732f1a2e9fc7ba1ac849862abf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPT2255967.
Special Days (feat. Takashi Fujii & PeanutsKun)
東京Friday Night (feat. 花澤香菜 & Mori Calliope)
Tokyo Friday Night (feat. Kana Hanazawa & Mori Calliope)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e11f0418a1957d46fd84f437823947577aecda73e9747b6638aa79f8feb3ca. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPA2458269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c09a588a93f573d695a44445f8e029bf372b1bf58147226cf3ab9d3e94d391. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPA2458292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58de90913da1d5784d564f34a476dec09548b0c7c1cb674f815b0efb7944139. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPG2588117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c263644a74a2eebe135fed75cd03091bb81e2c6342e83355340902a67a4af1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP302400002.